Granted Patent
Utility
US 4,967,941 · App. 07/337,752
Twist lock adjustable metering closure cap
Inventor:
James M. Beck
Patented Case
View Patent ↗
Granted: Nov 6, 1990
Filed: Apr 13, 1989
Inventor
James M. Beck
Assignee (at issue)
Creative Packaging Corp.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.